Valve-actuating means for sampling machines



C. M. HOAG VALVE ACTUATING MEANS FOR SAMPLING MACHINES Filed March 5. 1923 2 Sheet-Sheet 1 II1'VENTOR. BY 7 ATTO-RNEYS.

July 6,1926. 1,591,312

' C. M. HOAG VALVE ACTUATING MEANS FOR SAMPLING MACHINES Filed March 5, 1923 2 Sheets-Sheet 2 4/ I INVENTOR. /5 y%,a

ATTORNEYS.

to providean apparatusfor abstracting precn nc mmmi i w-Mu ms m;steam-m m.

' "Application filed iMarch 5,1923. Serial No. e23,052.

i invention relates to improvements" in sampling mac-hines; in particular that kind of machine'usecl forsampling liquids 'The princ pal objectof my-inventioniis determined amounts of liquid; from a =fl'6wing body of the-"same ah'pi edetermined g g v Cam-1ft being revolved at a suitable rate P of 1'speedf; depending on theg-numben of. 33.111-

periods of time.

Referring to the drawingsg in which ithe same numbers'indIca-te' l ke parts for gas, oil; water; or otherfliiids," and'zis' coupled to a casing 2 containing a partition '2" having; an orifice 3 Lthereinin which is p g V one" ,end ofl l to drop f to the same position seateda valve 4 for-openingor.'closingf-3.

Valve 4' is held 'in the casing bya -gland 5 and- .valve stem. 6 is; connected plvotally through'Wtoabaror lever 7. I

To one end of.'7fis,pivoted' a. connecting rod Siand'to the fother' end is pivoted'ia connecting" rod 95' 8 and 9 being 'pivotedfrespectively on.levers 11' and 10.I

'The wholeapparatus is mounted on a base 18, part ,of which" consists of a fulcrumglfl on which 10 "and 11" are pivoted through" an eccentric 13,: which is ;shown indetaii'in Fig. 5, andfbne endoflOand 11 are flexibly held to 18 by springs 17and16;respectively.

.It is to be.especiallgflnotedjthat one end I 4" remains "open "will be controlled" by the of'7is joined to one end'ofl'l by connecting rod 8, while the other end of 7 is joined by Connecting rod 9 to one end of 10 and in this manner it will be noted that one end of 10 and one end of .11 are free to move except as hereinafter described.

One end of both 10 and 11 is designed to rest on the face of'a specially designed cam 14,'driven by shaft15 connected to a's'uit-able source of power, which in the present instance consists of a small electric motor 23,

whose shaft 22 revolves a slotted crank 21 which actuates 15 and 14 by means of a crank 19 and a crank pin 20,.thus giving a suitable motor speed. However, any other suitable ment' '03-- lever *7 i shown in Fig. 4..

1, isi 'a pipe cou'pl'ed to} the valve-casing valve-4'; v y 7 The operation i asjfol'lows ples ;per; hourrequired; graduallyelevates one'endfbf; 10"and' 11," as shewn in Fig.=*= 2 This faction causes; the :pull of spring TL-the actuation of valve(ithroughileyer 7 i and connecting rod 9; =because= it will'be here noted that, one end or-1i is still on the high side ofthe' camyiace; This action-causes valve 1- to drop; whereby 3 is opened} a preoccupiediby lO, this action being accelerated by spring 16,;and the other endof =1'1- causes valve lto be again seated throughthe moveand: connect1ng:; rod- 8; as

' Thus it gwill ibe seen'that the action-oh the H'ence'fthe aparticular tnnefor-"opening valve], 4:. will-be ."controlled by the speed' of cam li andtlie period bftimediiring which position of the end of10, on the face of cam 14 with respect to the end of 11.

This is accomplished by the movement of eccentric 13, whereon 10 is mounted eccentrically with respect to 11, as shown in Fig.

5 in which 13 isthe eccentric body actuated through a slot 13 and whereon 11 is centrally. and pivotally mounted and His ec centrica-lly and pivotally mounted. 10 is held on 13 by a cap-screw 26 and washer 25,

firmly held to 12 -formagof priine:inoverhmay be used to actua te'ranrlt? determined" di stance for *the' passage ofa f i'liquid'i sample therethrough; which sample appara-tus ii'o'r:'opening valve'edepends-on the relative positioniofpivot 6" and thisposition istgovei'n'e'dby the locatibn' 'of the ends of leversflo and; 111', with respect to each othenio i'the faceof'cam 141:.

eccentricity of 13 will cause 10 to be moved towards 8 from 14:, thereby permitting the end of 10 resting on the face of cam 14 to drop off the abrupt face of 14: a predeterthe abrupt face of cam 14 through the instrumentalities described. 7 ,v

'- My apparatus can be usedfor drawing off other than'fluid samples, suchas sand, etc., and while I find the greatestapplication of my inventionin sampling liquids from pipe lines, it is obvious the same may be used on stationary bodies ofliquids or in any place where it is desired to withdraw samples of specified volumes at specified times.

-.1. The combination with a conduit of avalve, a pair of pivoted levers operatively connected with the valve, a cam for raising the ends of the levers simultaneously and lowering the ends at different time periods,

and a spring for each lever for causing said ends to be lowered quickly.

2. The comblnation wlth a conduit of a valve, a base, a pair of levers connected to the base by a' pivot, connections between said levers and said valve, a cam for raising and lowering the ends of said levers at predetermined periods and means in said pivot for varying said periods. 4

3. The combination with a conduit of valve adapted to open and close the conduit andmeans to actuate the valve, said means comprising a pairfof levers connected with the valve, and means adapted to engage both of the levers and to release one of the levers in advance of release of the other for momentary actuation of the valve. f

4. The combination with a conduit of a valve adapted to open and close the conduit and means to actuate the valve,said means lever is held'by said engaging means following the release of said other-lever.

5. The combination with a conduit of a valve adapted to open and close the conduit and means to actuate the valve, saidmeans including a pair of lovers connected with the valve, one of said levers extending beyond the other, and a cam engaging both the said levers andadapted to release the shorter lever'in advance of release of the longer lever for actuation of the valve.

6, The combination with a conduit of a valve adapted to open and close the conduit and means to actuate the valve comprising 7 a bar connected intermediate its'ends with said valve, a pair of rods connected with the respectiveends of the bar, a pair of levers, means for fulcruming said levers, eachlever being connected respectively. avith a rod, means for normally returning the levers'to initial position and means for actuating said levers adapted to releasev one of they levers in advance of release of the other for actua t1on of the valve.

, -7. The combination with a conduit of a valve adapted to open and close the con duit and means to actuate the valve com prising a bar connected intermediate its ends with said valve, a pair of rods connected with the respective ends of the bar, a pair of levers, means for fulcruming said. levers, each lever being connected respectively with a rod means for normally returning the leversf to, initial position, one lever being longer thanthe other, and a cam for actuating said levers by engagement with the ends thereof whereby the shorter .lever is released in advance of release of the other lever formomentary actuation of the valve. V v V Signed at Wilmington, in the county. of Los Angeles, and State of California, this 28 day of February A. D. 1923. 3

CHANCE MONTEL HOAG. 

